I agree, it's got a lot of flavour that reminds me of a flesh golem - stitched together, scar circling the head, "nearly dead" jerky movements. Plus, it specifically says they're not undead.
So, imagine a weak flesh golem with a gray ooze for a circulatory system.
The conversion may be a bit tricky, are there regular constructs or 'living constructs' with Con scores that can heal?
Anyway, we might as well get stuck in. What do the stats tell us?
Medium Construct
Hit Dice: 3d10+20
[assuming it's not a "living construct"]
Attack: Swordarm +X melee (1d6+Y/19-20) [
as a shortsword]
Full Attack: 2 swordarms +X melee (1d6+Y/19-20)
Special Attacks: Corrode weapon [
those that damage it], release ooze.
Special Qualities: construct traits [
already includes the immunity to mind-affecting effects described in the write up]
What about ability scores? Intelligence 1 from the description.
May be worth remembering the ability scores of the critter inside:
Gray Ooze (Medium): Str 12, Dex 1, Con 21, Int 0, Wis 1, Cha 1
I guess we could also scale down a flesh golem:
Flesh Golem (Large): Str 21, Dex 9, Con 0, Int 0, Wis 11, Cha 1
=>
Greymen: Str 13, Dex 11, Con 0 (or more if 'living construct'), Int 1, Wis 11, Cha 1
Don't think I like those scores, Str looks a bit low, Wis a bit high. Since they're described as uncoordinated I'm tempted to give them subpar Dex. How about averaging a flesh golem and a grey ooze, that gives:
Greymen: Str 16, Dex 5, Con 0, Int 1, Wis 6, Cha 1
I think that's better. Probably want to bump up the Dex and Wis a bit say Dex to the Flesh Golem's 9, Wisdom to 8?
Greymen: Str 16, Dex 9, Con 0, Int 1, Wis 8, Cha 1
That feels like it's in the right ballpark.
What do you lot think?